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CN-224231892-U - Casing on-line monitoring equipment

CN224231892UCN 224231892 UCN224231892 UCN 224231892UCN-224231892-U

Abstract

The utility model relates to the technical field of monitoring equipment, and discloses on-line monitoring equipment for a sleeve, which comprises a cement base, wherein one end of a stand column is fixedly arranged on the cement base, the on-line monitoring equipment also comprises a three-head mounting column, the other end of the stand column is fixedly provided with the three-head mounting column, and a mounting block is fixedly arranged on the three-head mounting column. In order to enable the device to avoid equipment fault expansion, the local discharge signal, the acousto-magnetic delay data and the surface temperature information of the high-voltage sleeve are collected in real time through the cooperative work of the high-frequency local sensor, the voiceprint sensor and the wireless temperature sensor, the 100kHz-30MHz frequency band and the 29dBA-140dB dynamic range are covered, the detection sensitivity to insulation defects, cable connector faults and abnormal temperature rise is remarkably improved, the voiceprint high-frequency combined detection principle is combined, the fault point distance is accurately judged by utilizing the acousto-magnetic delay value, and the fault positioning error is smaller than 1 meter.

Inventors

  • SHI XIAODONG
  • Yan Ruzhao
  • Zhao Yongshu

Assignees

  • 杭州乾跃自动化设备有限公司

Dates

Publication Date
20260512
Application Date
20250521

Claims (6)

  1. 1. The utility model provides a sleeve pipe on-line monitoring equipment, includes cement base (1), fixed mounting has stand (2) one end on cement base (1), its characterized in that still includes: The three-head mounting column (31), the other end of the upright column (2) is fixedly provided with the three-head mounting column (31), the three-head mounting column (31) is fixedly provided with a mounting block (32), the mounting block (32) is fixedly provided with a mounting seat (33), and the mounting seat (33) is fixedly provided with one end of a bottom circular tube (34); The high-voltage sleeve (35), the other end of the bottom circular tube (34) is fixedly provided with one end of the high-voltage sleeve (35), the other end of the high-voltage sleeve (35) is fixedly provided with one end of the top circular tube (36), the other end of the top circular tube (36) is fixedly provided with a connecting plate (37), the connecting plate (37) is fixedly provided with a connecting frame (38), and a plurality of groups of mounting seats (33), the bottom circular tube (34), the high-voltage sleeve (35), the top circular tube (36), the connecting plate (37) and the connecting frame (38) are arranged; Bottom collar (41), fixed mounting has bottom collar (41) on bottom pipe (34), fixed mounting has high frequency partial sensor (42) on bottom collar (41), fixed mounting has voiceprint sensor (43) on bottom collar (41), fixed mounting has top collar (44) on top pipe (36), fixed mounting has temperature sensor (45) on top collar (44), bottom collar (41), high frequency partial sensor (42), voiceprint sensor (43), top collar (44), temperature sensor (45) are provided with the multiunit.
  2. 2. The on-line monitoring device for a bushing according to claim 1, wherein the high-frequency local sensor (42) is a sensor based on a rogowski coil structure and is sleeved on a terminal screen grounding wire of the high-voltage bushing (35).
  3. 3. The on-line monitoring device for the bushing of claim 1, wherein the temperature sensor (45) is a wireless sensor and comprises a temperature probe, a data processing module and a wireless communication unit, the surface temperature of the high-voltage bushing (35) is monitored in real time, and is transmitted to the monitoring unit through wireless signals, and the bottom mounting ring (41) and the top mounting ring (44) are of split type structures and comprise a fixed shell and a movable shell.
  4. 4. The on-line monitoring device for the sleeve pipe according to claim 1, wherein the installation block (32) is internally integrated with a monitoring unit, RS485 and optical fiber communication are supported, the monitoring unit is connected with a background host by adopting an HTTP/HTTPS protocol, data interaction is realized through a RESTful interface, cloud integration and remote access are supported, and a filter circuit is arranged in the monitoring unit.
  5. 5. The on-line monitoring device for bushings according to claim 1, characterized in that the insulation structure of the high-voltage bushing (35) is a multi-layer capacitive screen design, the ground loop of the last screen is connected to the monitoring unit through a 50Ω coaxial cable, the protection level of the coaxial cable is IP65, and an expansion interface is reserved on the connecting frame (38).
  6. 6. The on-line monitoring device for the sleeve pipe of claim 1, further comprising a remote monitoring platform for displaying the partial discharge PRPS graph, the PRPD graph and the historical data curve in real time through a webpage end or a mobile terminal, wherein the platform supports the functions of multistage early warning threshold setting, remote opening and closing operation and report automatic generation.

Description

Casing on-line monitoring equipment Technical Field The utility model relates to the technical field of monitoring equipment, in particular to on-line casing monitoring equipment. Background The on-line monitoring system for casing pipe is one comprehensive system for real-time and comprehensive monitoring of the running state of gas insulating metal closed switch equipment. The method monitors the temperature, partial discharge, current and the like of the equipment in real time, so that the accurate assessment, fault early warning and intelligent diagnosis of the running condition of the equipment are realized, the safe and reliable running of a power system is ensured, the sound waves generated by the equipment in the running process are collected by a high-frequency voiceprint joint detection method, the temperature, partial discharge, current and the like of the equipment are monitored in real time, and the comprehensive understanding of the state of the equipment is ensured. However, in the actual use process of the device, most of the existing on-line monitoring devices for the sleeve cannot cover a wide enough detection frequency band, specific frequency signals generated by some insulation defects cannot be effectively captured, so that early and weak discharge signals cannot be detected, and potential faults are difficult to discover in advance. Disclosure of utility model The utility model aims to provide on-line monitoring equipment for a sleeve, which is used for solving the problems in the background technology. In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a sleeve pipe on-line monitoring equipment, includes the cement base, fixed mounting has stand one end on the cement base, still includes: The three-head mounting column is fixedly arranged at the other end of the upright column, a mounting block is fixedly arranged on the three-head mounting column, a mounting seat is fixedly arranged on the mounting block, and one end of a bottom circular tube is fixedly arranged on the mounting seat; The high-voltage sleeve is fixedly arranged at the other end of the bottom circular tube, one end of the high-voltage sleeve is fixedly arranged at the other end of the high-voltage sleeve, one end of the top circular tube is fixedly arranged at the other end of the top circular tube, the connecting plate is fixedly arranged on the other end of the top circular tube, the connecting frame is fixedly arranged on the connecting plate, and a plurality of groups of mounting seats, the bottom circular tube, the high-voltage sleeve, the top circular tube, the connecting plate and the connecting frame are arranged; The bottom collar, fixed mounting has the bottom collar on the bottom pipe, fixed mounting has high frequency partial sensor on the bottom collar, fixed mounting has the voiceprint sensor on the bottom collar, fixed mounting has the top collar on the top pipe, fixed mounting has temperature sensor on the top collar, bottom collar, high frequency partial sensor, voiceprint sensor, top collar, temperature sensor are provided with the multiunit. Preferably, the high-frequency local sensor is a sensor based on a rogowski coil structure, is sleeved on a terminal grounding wire of a high-voltage sleeve, has a detection frequency band of 500kHz-30MHz and a sensitivity of 1pC, the sensitivity of the voiceprint sensor is 11.2mV/Pa, the dynamic range is 29dBA-140dB, and is fixed on a bottom mounting ring through permanent magnet adsorption or adhesion for detecting an acousto-magnetic delay signal of a cable joint fault. Preferably, the temperature sensor is a wireless sensor, comprises a temperature probe, a data processing module and a wireless communication unit, monitors the surface temperature of the high-voltage sleeve in real time, and transmits the temperature to the monitoring unit through wireless signals, and the bottom mounting ring and the top mounting ring are of split type structures and comprise a fixed shell and a movable shell, are hinged through a hinge and are locked through screws, and are adapted to round tubes with different diameters. Preferably, the monitoring unit is integrated in the installation block, supports RS485 and optical fiber communication, is connected with the background host by adopting HTTP/HTTPS protocol, realizes data interaction through RESTful interface, supports cloud integration and remote access, and is provided with a filter circuit in the monitoring unit for filtering 50Hz power frequency interference in high-frequency local sensor signals and displaying discharge capacity, temperature and voiceprint data in real time. Preferably, the insulation structure of the high-voltage sleeve is a multi-layer capacitive screen design, the ground loop of the end screen is connected to the monitoring unit through a 50 ohm coaxial cable, the protection level of the coaxial cable is IP65, and